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1 Universitas Muhammadiyah Tangerang, 2 Universitas Muhammadiyah Tangerang, 3 Universitas Muhammadiyah Tangerang, 4 Universitas Muhammadiyah Tangerang, 5 Universitas Muhammadiyah Tangerang, 6 Universitas Muhammadiyah Tangerang
The purpose of this study is to give students an understanding of the operations of adding integers by using a number line. There are some students who find it difficult and wrong with the sum of integers. The method used interviews, observations, tests and then the data were analyzed with descriptive qualitative. In learning mathematics students do not fully understand the concept in problem solving. Based on the results of interviews, observations and tests that students' understanding of the operations of adding integers using lines says it is easier for students to understand than not using numbers.
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